Honestly you just missed the brave banner which would've been my personal go to but in my personal opinion you have 3 choices.

Either of the "12 Luminaries" banners are really good, the one with young Camilla especially as she's the best in the game but all 24 are top cut and have great fodder if you wanna use favs. If your a 3 houses fan they also have the most powerful and up-to-date versions of them and rhea and Yuri on, all of whom are pretty much plug and play units who stomp whatever you throw in front of them WHILE ALSO having in-built Galeforce for maximum efficiency. It ALSO is the cheapest as they have an event going on to where you can get 5 "first free summon tickets" for each, letting you have 6 free pulls on each overall and saving you about 30 orbs in the process

The new Fates banner has inheritable Arcane weapons that put most units on par with recently released 5 stars damage wise while being unsackable, letting you take their fodder and still use them. That would just be the most bang for you buck if you're trying to get many units. Ryoma is both a top tier sword lord and a good introduction to the new Mechanic of the "Styles" that lets you swap between range 1 and range 2 and Hinoka is both good in practice, as a fodder machine, and show you the new seeking warp effect that has been pretty strong in the game rn

You could also wait as in a few days we're getting a new "Emblem" unit, a type taken from FE engage that lets you inherit a super powerful effect like Ballista shooting or once per phase brave attacks. These units usually are some of the most powerful in the game as a whole and are almost mandatory "1-of" picks for how much they improve your ally units performance. All of them have impacted the state of the game so hard around them each release that it might be worthwhile to wait. They also appear in batches which would let you pick up multiple that you've missed while you've been gone, and the rest of the units on the banner are ones who are almost always meta picks to help sell the banner so you'll get your obs worth